Machine Design

Powerful dc Motor Weighs Less than 4 gm

The RE 8 motor has an 8-mm diameter, 16-mm length, and weighs less than 4 gm. The 0.8-mm-diameter motor shaft, (size of pencil lead) turns in two sleeve bearings. The ceramic shaft’s electrical insulating properties allow for a very compact commutator design. Precious metal brushes ensure constant and low contact resistance between brushes and commutator.

Advantages of the lightweight rotor include low inertia, very-fast acceleration, no magnetic detent, and minimal electromagnetic interference. The motor’s ironless winding allows for greater efficiency and makes it suitable for network-independent applications, such as lasers, leveling equipment, or insulin pumps.

maxon precision motors inc.
101 Waldron Rd.
Fall River, MA 02720
(508) 677-0520
www.maxonmotorusa.com

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